Sulphur burner



M. J. LEAHY SULPHUR BURNER June 30, 1931.

Filed Jan. 18. 1950 2 Sheets-Sheet l June 30, 1931. M. J. LEAHY 1,812,795

SULPHUR BURNER Filed Jan. 18, 1930 2 Sheets-Sheet 2 $11 @my @ZA/56' Patented June 30, 1931 UNITED., STATES PATE NT OFFICE f MICHAELJ. LEAHY, OF M'UNCY, PENNSYLVANIA sULrHUn :BURNER Application led January 18, 1930. Srerial No. 421,786.

l@ to operate with the exceptionof that required to provide a blast of air.

It is a further object of the invention to provide a burner which will produce large quantities of gaseous sulphur oxides and l5.allow any incombustible material torfall therefrom in its passage from the burner.

Further objects of the invention will appear'from the following description when read in connection with the accompanying 9 drawings showing illustrative embodiments of the invention and wherein :--y j Fig. l is a side elevation partly broken away j to show the interior parts land to shorten the figure;

scale on line 2-2'of Fig. 1; and

Figs. 3 and 4 are a side elevation yand a' plan view respectively, each partly broken invention.

be Vattached to an air blast means at flange 11, the burner projecting into a Y fitting 12. To

5 feed .sulphur tothe air blast of theburner the branch 11 of the Y is shown as secured toa 1 valve body 14 which in turn carries a hopper for sulphur supply. The YY 12 is shown as bearing and the other end of which shaft is journaled in a like bearing carried in a second 5 bearing housing 2O.` To the housing 2O there 'is attached a second Y 21 having a. down- 'ywardlydirecte'dbranch 22.

16 and 2O are' similar.

Y wheel 27.

laway, illustrating Ia modified form of lthea driven by motor 38.

j The members 16 and 20 are shown as providedwith closures 23, 24 carrying non-cylindrcal rceesses'in which are`fseatedE the ends- 25 of arms 17 shown as substantially cubical u in the embodiment chosen for illustration, between which the arm 17 extends and which is provided at its central portion with a split journal 26 for reception of shaft 18. It will bie understood that the bearings inv members The valve body 14 contains a valve of any suitable character, which may be an. ordinary sliding gate valve controlled'by a hand In operation the air blast is turned on 11 and the valve in casing 14 is opened to allow Y sulphur to fall by gravity and to be;.drawn downwardly by `the injectingaction of the --blast through burner l()y whereupon a 'screw plug 28 may be removed and a torch inserted for ignition of the sulphur, after which the screw plug 28 may be replaced and theblast increased.V The sulphur will beburned in the 7 Y l2 and its ignition will continue after it passes through the tube 29 housing the conf veyor 19 and due to thecheclring of the movej ment lof the gases and the mixing thereof by Fig. 2 is a vertical section upon an enlarged impact against the plates of the conveyor 19,- A

completecombus't-ion may take place.

Some ofthe sulphur will become meltedV and fall to the bottom of tube 29 in a molten condition and will be swept forwardlybv revolution ofi the conveyor 19 'as lit burns.

*The conveyor 19 will be caused torevolve by impact ofthe `blast 'against'V it. Any incombustible material contained in the sulphur will fall into the branch 22 of the `Y 21 from which it may be Awithdrawn from timeto time. Y

In the modication of'Figs. '3 and 4 the combustion chamber or tube 30 has a spiral conveyor mixing device 31 revolubly mounted therein as upon a bearing 32 housed in rT 33 and bearing 34 housed in the fitting 35. To supply a` blast ofairl to the combustion tube in this form of `the device, there is shown the nozzle 36 which may be in the form of a plain' pipe which is connected to one branch of fittinor and leads from a blower 37 ltu a conveyor screw 40 which in turn de-v there is shown a hopper receptacleBQ de1ivernew livers the sulphur to the fitting 35 to be picked up by the air blast and fed to the tube 30.

To drive the conveyor the shaft 4l of the conveyor screw 40 which is mounted in a bea-ring 42 in the fitting 85 has keyed thereto a bevel gear 43 in mesh with a bevel gear 44 carried by the shaft of the conveyor screw 41. To manually operate the screw 40 When starting the device into operation, there is.

shown a hand crank 45 keyed upon the end of shaft 4l. A removable plug 46 is shovvn whereby access may be had to the interior of the fitting 35.

In this form of thel device thereA is shownI also a sump 47 provided by Way of a branch of the T 33. having a removable plug 48 whereby incombustible materiali gathering in the sump. 47 may be removed from time to time asis found necessary.

In this form of the device the blast of air causes revolution of screw 4l and feeds the burning sulphur into the-,tube 3 0. The revolution of theconveyor 3l is caused? to actuate the feed screw` 404 to supply sulphur to the burner and the. operationy of the device is otherwise similar to the form shovvn in Figs. l and 2.

In operation the burner: is found to give a very? completecombustion of sulphur and to .operate withvery little expenditure of power; Among important advantages secured bytheinvention are; thatthespiral conveyorin the: combustion-l tube not, only removes incombustibles; from the combustion :u chamber but presentsa.; large surface tothe blast. Theturns of the spiral become coated With molten,burning sulphur. The a-irblast exerting pressurev againstthese turns toicause revolutionA ofA the Conveyor is thus brought into. intimate forciblecontact with' thisburn ing sulphureto provide a very efficienti expida tion thereof. Alsol the; blower is' handling only pure at atmospheric temperature whichhasno corrosive actionuponthe blowing apparatus. Moreover the. air'beingata relatively lowy temperature; requires supply of a. less volumethan the-heated. which; is moved by former form-s of; apparatus. if

Minor Changes may be made in the physical embodiment ofV the invention. Within` the scope of the appended claims Without departing from the spirit of the invention.

li claimg:

1. A sulphur burnerscomprising, in combination, a tubular member,l a nozzle for-introducing air under pressure axially of said member, a sulphur hopperarranged above and opening freely to the space about said nozzle to'- deliver sulphur to the injecting actionA of said nozzle and means toi control delivery of said sulphur.

2. A sulphur burner com-prisinggin combination, a fitting, a tubular member connected axially of'` said fitting, an air blast; nozzle enterin, .r,V said fitting axially of. said; tubular member, a sulphur hopper connecting to a remaining branch of said fitting having a delivery opening adjacent the end of said nozzle and means for controlling flow of sulphur from said hopper into said fitting.

3. A sulphur burner comprising, in combination, a tubular combustion chamber, a spiral conveyor revolubly mounted in said chamber, a fitting connected to said chamber, an air blast nozzle projecting into said fitting axially ofsaid chamber and means connected to a remaining branch of said fitting to supply sulphur to the air blast passing through said nozzle.

4. A sulphur burner comprising, in combination, a tubular combustion chamber, a spiral 'conveyor revolublymounted in said chamber, a fitting connected to said chamber, an air blast nozzle projecting into saidfittingy axially ofA said chamber, means connected to a remaining branch of said fitting to supply sulphur to the air blast passing through said nozzle, and a member connected to the outlet of said combustion chamber having means toI receive incombustible material passing from said chamber with `the products of-combustion of the sulphur.

5. A sulphur burner comprising, inY combination, a combustion chambera spiral conveyor revolubly mounted in said, chamber, meansfor producing-a blast of air into said chamber' to cause revolution of said conveyor andfor combustion of sulphur, a sulphur supply receptacle,l means tofeed sulphur from sai-d receptacle to said air blast and means to actuate saidY feed means from lsaid conveyor.

6. A sulphur burner comprising, in combination, a` tubular combustion chamber, a spiral conveyor revolubly` mounted in said tube, a: threeevay fitting having one branch connected to said tube, air blast means deliiveringto a second branch of said fitti-ng and spiral conveyorfeed means delivering to the third branch of said fitting, gear means housed in said fitting for actuation of said feed` means byY said first named spiral by revolution caused by said blast and a receptacle for supply of sulphur to said feed means.

A sulphur burner comprising, in combination, a tubular combustion. chamber, a spira-l conveyor mounted for revolution therein, a four Way fitting having one branch connected to said' chamber and the opposite branch connected to sulphur feed and blast means, plugs closing the remaining opposite branches, an arm with its ends supported by said plugs and a journal bearing for said conveyor carried by said arm.

8. A sulphur burner comprising, in combination, a combustion chamber,a spiral conveyor revolubly mounted in said chamber, means for producing a blast of` airinto lsaid chamber to cause revolutionV of said con- Veyor and for combustion of sulphur, a, sulphur supply receptacle, means to feed sulphurrfrom said receptacle to said air blast, means to aetuate said feed means from said conveyor, and manually actuated means for initiating action of said feedmeans.

MICHAEL J. LEAHY. 

